Which of the following describes a properly of pure water? A) more dense as a solid B) molecules are noncohesive C) changes temperature rapidly D) can hold many molecules in solution E) acidic pH

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

What is happening when the water inside a kettle heats up and begins to boil

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products